Pulling-over machine



M y 1953 E. L. BUTLER 2,637,053

' PULLING-OVER MACHINE I Filed July 29, 1950 k HI II 55 Inventor Z0 Ei'neqtlnfiufler Patented May 5, 1 953 UNITED STATES PATENT OFFICE PULLING-OVER MACHINE Ernest L. Butler, Lynn, Mass, assignor to United Shoe Machinery Corporation, Flemington, N. J., a corporation of New Jersey Application July 29, 1950, Serial No. 176,676

6 Claims. 1 v

This invention relates to pulling-over machines for use in the manufacture of shoes for pulling uppers over lasts. Such machines are commonly provided with grippers which grip the marginal portion of an upper at the end of the toe and the opposite sides of the forepart respectively and apply a pull to the upper, and with means for securing the upper to an insole on the last in locations spaced from one another at the end of the toe and the sides of the forepart while leaving the forepart of the upper unsecured in other locations. It is the common practice thus to secure the upper to the insole'by the use of tacks, although it has been proposed heretofore, in the manufacture of shoes of the kind in which the foreparts of the uppers are secured in final lasted position by an adhesive, to secure the upper to the insole in that manner also in the pulling-over operation.

An object of the present invention is to provide in a pulling-over machine improved means for securing the upper to the insole by adhesion. For the purpose in view the construction herein shown includes wipers which wipe the marginal portion of the upper inwardly over the insole into position to adhere to the insole, and hammers which are moved heightwise of the shoes through slot in the wipers into engagement with portions of the margin of the upper previously engaged and wiped inwardly by the wipers to deliver blows in those locations and thus to afiord better insurance that the upper will be heldsecurely when released by the wipers. To cause the wipers thus to act first on the portions of the upper to be engaged by the hammers as wellas on other portions the slots in the wipers are closed slots terminating short of the inner ends of the wipers. In the construction shown, moreover, there are two such hammers at each side of the forepart, both carried by a single operating member but relatively movable heightwise of the shoe and controlled respectively by difierent springs in such manner as to prevent the force of the blow delivered by either of them from being limited by engagement of the shoe with the other. adapt the machine to operate satisfactorily on shoes which vary greatly in size, as adults shoes and childrens shoes, it is desirable to vary the distance between the two hammers at each side of the forepart, and accordingly provision is further afforded for conveniently efiecting this variation. .As illustrated, the hammers may be positioned at difierent distances from each other independently of their controlling springs, the distance between them being determined by a. de-

2 tachable plate having openings through which they extend. When it is desired to make an adjustment a difierent plate having differently spaced openings is substituted.

The novel features of the invention, including various novel details of construction and combinations of parts, will now be more particularly described with reference to the accompanying drawings and thereafter pointed out in the claims.

In the drawings,

Fig. 1 is a perspective view of a portion of a pulling-over machine to which the invention is herein shown as applied, showing in relation to a shoe the parts as they appear when the hammers are in engagement with the upper;

Fig. 2 is a view in front elevation of portions of the structure shown in Fig. l, with parts broken away; and

Fig. 3 is a section on the line IIIIII of Fig. 2 but showing the parts in their initial positions.

The invention is herein shown as applied to a machine of a well-known type the organization of which is mainly of the same general character as disclosed in United States Letters Patent No. 1,029,387, granted on June 11, 1912, on an application of R. F. McFeelys. Only such parts of the machine, therefore, will be herein referred to as is necessary for an understanding of the invention.

Such a machine includes grippers for gripping the marginal portion of the upper respectively at the end of the toe and the opposite sides of the forepart and for pulling the upper in directions heightwise of the last, a portion of one of the side grippers beingshown at 2 in Fig. 2. In this operation the last is held against the force of the pull on the upper by a sole rest 4 in engagement with the bottom of the forepart of the insole. While the grippers are holding the upper under tension side clamps 6, only one of which is herein shown, are moved inwardly into engagement with the upper at the opposite sides of the forepart respectively, each of these side clamps having associated with it a clamp member 8 which is moved into engagement with the upper in position to support the shoe against pressure on its bottom face. Thereafter the margin of the upper is wiped inwardly over the insole by a pair of wipers 10 at each side of the forepart and a single wiper'l2 at the end of the toe, the grippers being caused to release the upper as the wipers are moved inwardly.

Each pair of side wipers I0 is carried by a side arm 14 mounted for swinging movement widthwise of the shoe to operate the wipers, a portion of one of these side arms being shown in Figs. 1 and 2, and the end wiper I2 is similarly operated by a front arm (not shown) mounted to swing lengthwise of the shoe. Slidingly mounted each side arm I4 for turning movement about an axis extending heightwise of the shoe is a block I6 which corresponds to the block 500 shown in Letters Patent No. 1,029,387, and secured to the lower end of this block to turn therewith is a l wiper holder I8. The side wipers It mounted on each of these wiper holders are yieldingly controlled in the manner disclosed in United States Letters Patent No. 1,381,162, granted on June 14, 1921, on an application of U. J. Bouchard. A downwardly turned outer end of each side wiper engages a nut 22 threaded on the outer end of a rod 24 movably mounted in the wiper holder I8, and mounted between a head 26 on the inner end of the rod and a wall of the wiper holder is I a spring 28 which-is yieldable in response to resistance of the upper to the inward movement of the wiper, especially before the upper is released by the gripper. Bearing upwardly against the outer end portion of the wiper, moreover, is a spring-pressed plunger against the resistance of which the wiper may tip in response to upward pressure of the shoe on its inner end portion. As further disclosed in the last-mentioned Letters Patent, the initial positions of both wipers of each pair with respect to such tipping movement are adiustably determined by an eccentric member 32 mounted to turn on a pin 34 which extends through the upper end of a member 36 projecting upwardly from thewiper holder IS, the eccentric member engaging a washer 40 which overlies outer end portions of the wipers. Adjustably secured to each wiper holder I 8 is a stop member 42 arranged to engage a shoulder on the corresponding side clamp 6 to limit the movement of the side arm I4 and therefore the inward movements of the wipers over the shoe, and in response to this engagement of the stop member with the side clamp the block I6 which supports the wipers may turn in the side arm I4 to position the wipers in this respect in proper relation to the shoe. To limit turning movement of the block I6 in the absence of a shoe, each side arm I4 carries a member 44 mounted in a slot in the arm and extending into a recess in the block, this member corresponding to one of the tack conductors 530 shown in Letters Patent No. 1,029,387 but being shortened to serve merely as a stop member.

Associated with each of the side arms i4 is a bar 46 which, when released, is impelled downwardly by a spring (not shown) in the same manher as a corresponding tack driver bar shown. in the last-mentioned Letters Patent. Formed on the lower end of this bar is a downwardly extending stud 48 on which is mounted for turning movement about an axis extending heightwise of the shoe 9. block 50. This block is in engagement with a flat inner face of the block I6, so that as the latter turns in the arm I4 the block 50 turns about the stud 48. Carried by the block 50 are two hammers 52 which resemble tack drivers as used in a machine of the type shown when the machine is equipped for driving tacks but are of somewhat greater diameter. These hammers, when the bar 48 is impelled downwardly, first enter tapering recesses 54 formed in a block 55 which is secured between the lower end of the block 16 and the wiper holder I8. Below the recesses 54 the hammers are driven through slots 58 formed in the inner end portions of the wipers It and elongated in directions widthwise of the shoe, the slots, however, terminating short of the inner upper-engaging ends of the wipers. Each hammer 52 extends through a bore 50 in a plate 62 secured by a screw 64 on the lower end of the block 50 and has on its upper end an enlarged head 66 arranged to engage the upper face of the plate. The head 66 of each hammer 52 lies in a recess 6'! in the block 50 and is engaged above by the head 68 of a pin 18 mounted for upward and downward movements in the block 56 the recess 6'! and the head 68 being elongated in directions lengthwise of the shoe relatively to the head 66 of the hammer. Between the head 83 and a shoulder on the block is a spring I2. Accordingly, after engagement of each hammer 52 with the margin of the upper the spring 72 asso ciated therewith will yield to permit further downward movement of the bar 46 and the block 50, the downward movement of the bar being limited by the means (not shown) which limits movement of the corresponding tack driver bar in machines of the type shown in Letters Patent No. 1,029,387. It will be evident that since the hammers are thus relatively movable the force of the blow of either hammer on the margin of the upper will be in no way restricted by the engagement of the shoe with the other hammer.

It will be evident that each plate 62, by means of the bores 60 through which the hammers 52 extend, determines how far the hammers are spaced from each other lengthwise of the shoe, and as shown in Fig. 3 they are positioned as close to each other as is practicable. If it is desired to space the hammers farther apart in operating on substantially larger shoes, a different plate 52 having bores 60 spaced farther from each other will be substituted, the elongated recesses 61 and the heads 68 on the pins II! permitting this to be done without affecting the functions of the springs I2 in relation to the hammers. When such an adjustment of the hammers is made a correspondingly different wiper assembly, including a diflerent block 56, also is substituted.

To operate similarly to the above-mentioned hammers on the margin of the upper at the end of the toe there is provided a hammer 14 which is of somewhat smaller diameter than the hammers 52 and may be of the same diameter as the usual tack driver. This hammer is secured to the lower end of a bar 15 which corresponds to the usual front tack driver bar and is impelled downwardly by a spring (not shown) This hammer is driven through a, slot I8 in the end wiper I2, the slot being elongated lengthwise of the shoe but terminating short of the inner end of the wiper.

Before a shoe comes to the machine a suitable adhesive, customarily rubber latex, will have been applied to the margin of the forepart of the insole and to the margin of the upper. If the upper includes different layers, the adhesive will have been applied between the layers as well as on the surface which is to be next to the insole. The shoe is presented to the machine by the operator with the margin of the upper between the gripper jaws, and thereafter the machine operates thereon in the manner already explained. It will be evident that in wiping the margin of the upper inwardly over the insole the wipers engage and press down on the insole the portions of the upper which are to be engaged by the hammers, as well as other portions thereof, and that the blows delivered bzr the hammersaffo'rd increased insurance that the adhesive will be effective to hold the upper securely after it is released by retractive movements of the wipers. The provision for relative movements of the two hammers at each side of the forepart in the manner explained insures that the force of the blow delivered by either hammer will not be limited by engagement of the shoe with the other and therefore that each hammer will be fully effective regardless of the shape or position of the shoe.

Having described the invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a pulling-over machine, the combination with means for pulling an upper over a last, of means for securing the margin of the upper by adhesion to an insole on the last in different locations about the forepart of the last While leaving the forepart of the upper unsecured in other locations, said securing means including at each side of the forepart means for wiping the margin of the upper inwardly over the insole into position to adhere to the insole and including also at each side of the forepart a pair of hammers spaced from each other lengthwise of the last and arranged to engage respectively different portions of the margin of the upper previously engaged and wiped inwardly by said wiping means, and a member common to each pair of hammers and movable to carry them heightwise of the last to deliver blows on the margin of the upper, the two hammers at each side of the forepart being mounted for relative movement heightwise of the last in thus acting on the upper to prevent the force of the blow delivered by either of them from being limited by engagement of the shoe with the other.

2. In a pulling-over machine, the combination with means for pulling an upper over a last, of means for securing the margin of the upper by adhesion to an insole on the last in different locations about the forepart of the last while leaving the forepart of the upper unsecured in other locations, said securing means including at each side of the forepart wipers for wiping the margin of the upper inwardly over the insole into position to adhere to the insole and including also at each side of the forepart a pair of hammers spaced from each other lengthwise of the last and arranged to engage respectively different portions of the margin of the upper previously engaged and wiped inwardly by said wipers, the wipers having therein slots terminating short of their inner upper-engaging ends, and a member common to each pair of hammers and movable to carry them heightwise of the last to deliver blows on the margin of the upper through said slots in the corresponding wipers, the two hammers at each side of the forepart being mounted for relative movement heightwise of the last in thus acting on the upper to prevent the force of the blow delivered by either of them from being limited by engagement of the shoe with the other.

3. In a pulling-over machine, the combination with means for pulling an upper over a last, of means for securing the margin of the upper by adhesion to an insole on the last in different locations about the iorepart of the last while leaving the forepart of the upper unsecured in other locations, said securing means including at each side of the forepart means for wiping the margin of the upper inwardly over the insole into position to adhere to the insole and ineluding also at each sideof the forepart a pair of hammers spaced from each other lengthwise of the last and arranged to engage respectively different portions of the margin of the upper previously engaged and wiped inwardly by said wiping means, a member carrying each pair of hammers and movable heightwise of the last to cause them to, deliver blows on the margin of the upper, the hammers carried by each member being movably mounted each independently of the other to permit the member to move relatively to them heightwise of the last after their engagement with the upper, and springs arranged to act respectively on the different hammers and yieldable each independently of the other in response to the further movement of said member after the engagement of the hammers with the upper.

4. In a pulling-over machine, the combination with means for pulling an upper over a last, of means for securing the margin of the upper by adhesion to an insole on the last in different locations about the forepart of the last while leaving the forepart of the upper unsecured in other locations, said securing means including at each side of the forepart means for wiping the margin of the upper inwardly over the insole into position to adhere to the insole and including also at each side of the forepart a pair of hammers spaced from each other lengthwise of the last and arranged to engage respectively different portions of the margin of the upper previously engaged and wiped inwardly by said wiping means, a block carrying each pair of hammers and movable heightwise of the last to cause them to deliver blows on the margin of the upper, the hammers carried by each block being movably mounted each independently of the other to permit the block to move relatively to them heightwise of the last after their engagement with the upper, members movably mounted in each block and engaging said hammers, the hammers being arranged to be positioned adjustably different distances apart in engagement with said members, and springs arranged to act respectively on said different members and yieldable each independently of the other in response to the further movement of the block after the engagement of the hammers with -the upper.

5. In a pulling-over machine, the combination with means for pulling an upper over a last, of means for wiping the margin of the upper inwardly over an insole on the last into position to adhere to the insole in different locations about the iorepart of the last while leaving the forepart of the upper unattached to the insole in other locations, a pair of hammers arranged to act on the overwiped margin of the upper at each side of the forepart, a block carrying each pair of hammers and movable heightwise of the last to cause them to deliver blows on the margin of the upper, the hammers carried by each block being movably mounted each independently of the other to permit the block to move relatively to them heightwise of the last after their en agement with the upper, springs in each block arranged to act respectively on the different hammers and yieldable in response to such further movement of the block after the engagement of the hammers with the upper, the block having therein recesses into which the hammers extend, said recesses being elongated lengthwise of the last to permit the hammers to be positioned adjustably different distances apart in operative relation to said springs, and a plate detachabiy secured to the block and having openings through which the hammers extend for determining the distance between them in accordance with the distance hetween said openings.

6. In a pulling-over machine, the combination with means for pulling an upper over a last, of means for Wiping the margin of the upper inwardly over an insole on the last into position to adhere to the insole in different locations about the forepart of the last while leaving the forepart of the upper unattached to the insole in other locations, a pair of hammers arranged to act on the overwiped margin of the upper at each side of the forepart, a block carrying each pair of hammers and movableheightwise of the last to cause them to deliver blows on the margin of the upper, the hammers carried by each block being movably mounted each independently of the other to permit the block to move relatively to them height-wise of the: last after their engagement with the upper, members movably mounted in each block and engaging said hammers, springs arranged to act respectively on said difierent members and yielciable in response to such-further movement of the block after the engagement of the hammers with the upper, the block having therein recesses into which the hammers extend, said recesses being elongated lengthwise of the last to permit the hammers to be positioned adjustably diiferent distances apart in engagement with said members, and a plate detachably secured to said block and having openings therein through which the hammers extend for determining the distance between them in accordance with the distance between said openings.

ERNEST L. BUTLER.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 663,777 McFeely Dec. 11, 1900 988,582 McFeely Apr. 4, 1911 1,197,604 Chaplin Sept. 12, 1916 1,577,841 Morgan Mar. 23, 1926 1,605,053 Morgan Nov. 3, 1926 2,081,940 Lindblad June 1, 1937 FOREIGN PATENTS Number Country Date 255.716 Great Britain July 29, 1926 

